Look for StatAccumInput instead of StatsdInput / StatMonitor pair.
Merge branch 'dev' into features/decouple-statmonitor
Use new `h.StatAccumulator()` method instead of doing it ourselves.
Add toml alias of 'stat_accum_name' for 'StatAccumName' attribute.
Merge pull request #11 from mozilla-services/features/decouple-statmonitor

Features/decouple statmonitor